whats wrong in the for loop in my app?

type visualiseringsapp2_1.mlapp

classdef visualiseringsapp2_1 < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure          matlab.ui.Figure
        UITable           matlab.ui.control.Table
        OsmoticdataresultsforallzonesLabel  matlab.ui.control.Label
        ReadresultsLabel  matlab.ui.control.Label
        Switch            matlab.ui.control.Switch
        UIAxes            matlab.ui.control.UIAxes
    end

    
    properties (Access = public)
        Callingapp
    end
    

    methods (Access = private)

        % Code that executes after component creation
        function startupFcn(app, app2, app3)
            app.Callingapp = app3;
          
        end

        % Value changed function: Switch
        function SwitchValueChanged(app, event)
            value = app.Switch.Value;
            if strcmpi(value,'on')
            osmotic_data_table=readtable('Osmotic_data.xls', "Sheet", 1);
            app.UITable.Data=osmotic_data_table;
            app.UITable.ColumnName= osmotic_data_table.Properties.VariableNames;

            x=table2array(  osmotic_data_table(:,"Total_water_activity"));
            
            y=table2array(  osmotic_data_table(:,"Osmotic_pressure"));
            
            plot(app.UIAxes,x,y)
            
            end 
            for i = 1:app.Callingapp.antall_soner
                if Osmotic_pressure(i)<100
                    effect='Not benefical';
                elseif Osmotic_pressure(i)>=100&&Osmotic_pressure(i)<120
                    effect='Intermediate';
                else
                    effect='Benefical';
                    
                end
            end
            app.UITable.Data=[osmotic_data_table effect];
        end
    end

    % App initialization and construction
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Create UIFigure
            app.UIFigure = uifigure;
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'UI Figure';

            % Create UITable
            app.UITable = uitable(app.UIFigure);
            app.UITable.ColumnName = {'Column 1'; 'Column 2'; 'Column 3'; 'Column 4'};
            app.UITable.RowName = {};
            app.UITable.Position = [15 254 426 185];

            % Create OsmoticdataresultsforallzonesLabel
            app.OsmoticdataresultsforallzonesLabel = uilabel(app.UIFigure);
            app.OsmoticdataresultsforallzonesLabel.BackgroundColor = [0 1 1];
            app.OsmoticdataresultsforallzonesLabel.FontWeight = 'bold';
            app.OsmoticdataresultsforallzonesLabel.Position = [15 450 426 22];
            app.OsmoticdataresultsforallzonesLabel.Text = '                                   Osmotic data results for all zones';

            % Create ReadresultsLabel
            app.ReadresultsLabel = uilabel(app.UIFigure);
            app.ReadresultsLabel.FontWeight = 'bold';
            app.ReadresultsLabel.Position = [121 215 78 22];
            app.ReadresultsLabel.Text = 'Read results';

            % Create Switch
            app.Switch = uiswitch(app.UIFigure, 'slider');
            app.Switch.ValueChangedFcn = createCallbackFcn(app, @SwitchValueChanged, true);
            app.Switch.Position = [242 217 45 20];

            % Create UIAxes
            app.UIAxes = uiaxes(app.UIFigure);
            title(app.UIAxes, 'Total water activity versus osmotic pressure')
            xlabel(app.UIAxes, 'Activity')
            ylabel(app.UIAxes, 'Osmotic_ pressure')
            app.UIAxes.YTickLabel = {'0'; '50'; '100'; '150'; '200'; '250'; '300'; '350'; '400'; '450'; '.500'; '1'};
            app.UIAxes.XGrid = 'on';
            app.UIAxes.YGrid = 'on';
            app.UIAxes.Position = [15 10 426 185];
        end
    end

    methods (Access = public)

        % Construct app
        function app = visualiseringsapp2_1(varargin)

            % Create and configure components
            createComponents(app)

            % Register the app with App Designer
            registerApp(app, app.UIFigure)

            % Execute the startup function
            runStartupFcn(app, @(app)startupFcn(app, varargin{:}))

            if nargout == 0
                clear app
            end
        end

        % Code that executes before app deletion
        function delete(app)

            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end

I have a for loop in visualiseringsapp 2_1 , there is something wrong in it I think

I am gettin this error message when I run the app:

Error using visualiseringsapp2_1/startupFcn (line 23)

Not enough input arguments.

Error in visualiseringsapp2_1 (line 115)

runStartupFcn(app, @(app)startupFcn(app, varargin{:}))

Error in app3/DisplayallresultsButtonPushed (line 1855)

visualiseringsapp2_1(app)

Error using matlab.ui.control.internal.controller.ComponentController/executeUserCallback (line 335)

Error while evaluating Button PrivateButtonPushedFcn.

Dot indexing is not supported for variables of this type.

Error in visualiseringsapp2_1/SwitchValueChanged (line 42)

for i = 1:app.Callingapp.antall_soner

Error using matlab.ui.control.internal.controller.ComponentController/executeUserCallback (line 378)

Error while evaluating Switch PrivateValueChangedFcn.

.......

I have declared app2 as the input argument in my startup for visualiseringsapp2_1 because it is using the public property from app2 (called antall_soner), and the callingapp is app 3 . ( meaning the visualiseringsapp2_1 is called from app3), as you can see.

Answer 1

[Eric Delgado]

My first piece of advice is: try to assign meaningful names to your applications. Names like 'app2', 'app3', and 'visualiseringsapp2_1' are definitely not helpful! :)

So, if I understood correctly, you're calling 'visualiseringsapp2_1' from 'app3', and you're trying to pass the handles of 'app2' and 'app3' to 'visualiseringsapp2_1'. Inside 'visualiseringsapp2_1', you have a startup function like this:

startupFcn(app, app2, app3)

The error messages was: "Not enough input arguments."

When you push a button, in "app3", you are calling:

visualiseringsapp2_1(app)

But look... you are not passing two arguments, but one! If you intend to keep 'app2' and 'app3' as arguments for your 'visualiseringsapp2_1' app, in this order, then your call (inside 'app3') should look something like this:

visualiseringsapp2_1(app.app2Handle, app)

Notice that since you want to pass the handle of 'app2' to 'visualiseringsapp2_1', it's a good idea to store its handle as a property of 'app3'. Below changes that you have to make...

%% Changes in "app3.mlapp"
properties (Access = public)
    App2Handle
end

% DisplayallresultsButtonPushed 
visualiseringsapp2_1(app.App2Handle, app)

%% Changes in "visualiseringsapp2_1.mlapp"
% Create a property for each handle...
properties (Access = public)
    App2Handle
    App3Handle
end

function startupFcn(app, app2, app3)
    app.App2Handle = app2;
    app.App3Handle = app3;  
end

% And replace app.Callingapp.antall_soner for app.App2Handle.antall_soner